How are you supposed to store leftovers from those large cans?
That stack is certainly NOT portable. I’m going with foods that can be eaten cold - tuna, anchovies, beans, oatmeal, granola bars, beef jerky, etc. - and transportable.
“How are you supposed to store leftovers from those large cans?”
You cant! Stick with the standard size cans of fruits, vegetables and meats. Mega sized bags of rice, pasta, salt, sugar, dried beans and things like peanut butter, coffee, honey, pancake mix, flower, spices Bisquick, etc, are ok without refrigeration.